CN102797715A - Oil cylinder control device and use method thereof - Google Patents
Oil cylinder control device and use method thereof Download PDFInfo
- Publication number
- CN102797715A CN102797715A CN2012103088744A CN201210308874A CN102797715A CN 102797715 A CN102797715 A CN 102797715A CN 2012103088744 A CN2012103088744 A CN 2012103088744A CN 201210308874 A CN201210308874 A CN 201210308874A CN 102797715 A CN102797715 A CN 102797715A
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- motor
- oil cylinder
- piston
- controller
- oil
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Abstract
The invention relates to an oil cylinder control device and a use method thereof. The oil cylinder control device comprises an oil cylinder, an oil pump, a motor and a controller, wherein a piston is arranged in the middle of the oil cylinder body of the oil cylinder; the oil cylinder body is partitioned into an oil inlet cavity and an oil outlet cavity by using the piston; a left piston rod is connected to the middle of the left side of the piston; a right piston rod is connected to the middle of the right side of the piston; the oil inlet cavity is connected with a control valve through a pipeline; the control valve is connected with a quantitative pump; the quantitative pump is connected with the motor and an oil tank respectively; the oil outlet cavity is communicated with the oil tank through a pipeline; a rotary encoder is connected and arranged on one side of the motor; and both the motor and the rotary encoder are connected with the controller. The oil cylinder control device is simple in structure; and the controller is used for controlling the rotating speed of the motor, so that the output amount of a variable pump or the quantitative pump is controlled, the displacement of the oil cylinder can be controlled accurately, the mechanical structure is simplified, and cost is reduced.
Description
Technical field
The present invention relates to the oil cylinder control field of machinery, particularly relate to a kind of oil cylinder control gear and method for using thereof.
Background technique
Oil cylinder is widely used in present machinery; Generally the control to oil cylinder all is closed loop, promptly on the rod of oil cylinder displacement transducer is housed, the control of oil cylinder be through displacement transducer send out signal to controller then controller accomplish control to oil cylinder; But the oil cylinder that in reality, has many needs to rotate; The installation position displacement sensor becomes very difficult on these oil cylinders, even can't install, and so just can't realize the accurate control to oil cylinder.
Summary of the invention
Technical problem to be solved by this invention provides a kind of oil cylinder control gear and method for using thereof, and is simple in structure, can accurately control the displacement of oil cylinder, and effect is obvious.
The technical solution adopted for the present invention to solve the technical problems is: a kind of oil cylinder control gear is provided; Comprise oil cylinder, oil pump, motor and controller, the centre of the cylinder body of described oil cylinder is equipped with piston, and described piston is divided into cylinder body oil suction chamber and goes out oil pocket; The left side of described piston is connected with the left piston bar between two parties; The right side is connected with right piston rod between two parties, and described oil suction chamber is connected with control valve through pipeline, and described control valve links to each other with metering pump; Described metering pump links to each other with the fluid case with motor respectively; Describedly go out oil pocket and be communicated with the fluid case through pipeline, a side of described motor is connected and installed with rotating coder, and described motor all links to each other with controller with rotating coder.
Described metering pump is replaceable to be variable displacement pump, and described variable displacement pump links to each other with controller with motor respectively.
A kind of method of using the oil cylinder control gear, step is following.
(a) rotation of controller control motor, simultaneously, rotating coder detects the actual speed of motor or rotates the number of turns and feed back to controller;
(b) motor drives metering pump work, the fluid that metering pump is discharged;
(c) fluid of metering pump discharge gets into oil suction chamber behind control valve, and fluid promotes piston and is moved to the left.
Work with motor in the described step (a) is divided into M time period, T
MBe the working time of motor, then T
M=t
1+ t
2+ t
3+ ...+t
M, n
XBe t
XThe rotating speed of time period inner motor, N
MBe accumulated time the one-tenth final required number of turns that turn over, the then N of motor through the M section
M=n
1* t
1+ n
2* t
2+ n
3* t
3+ ...+n
M* t
M
If controller control motor keeps certain rotation speed n, then N
M=n*T
M
The fluid volume that metering pump is discharged in the described step (b) is V, V=N
M* V
0, V wherein
0The fluid amount that turns around and discharged for metering pump.
The sectional area of oil suction chamber is S in the described step (c)
q=π * (A
2-B
2)/4, A is the diameter of section of right piston rod, B is the diameter of section of left piston bar, the distance that piston is moved to the left: L=V/S
q=4N
M* V
0/ [π * (A
2-B
2)].
The number of turns N that described controller can turn over through the feedback control motor of rotating coder
M, the displacement distance L of piston can be by formula L=V/S
q=4N
M* V
0/ [π * (A
2-B
2)] draw.
Described metering pump can replace with variable displacement pump, described controller controllable variable pump delivery V
X, V
XBe t
XThe turn around mean value of the amount of being discharged of time period internal variable pump, T
MBe cumulative time, T
MThe total displacement of the variable displacement pump in the time is V, V=Δ V
1+ Δ V
2+ Δ V
3+ ...+Δ V
M=V
1* n
1* t
1+ V
2* n
2* t
2+ V
3* n
3* t
3+ ...+V
M* n
M* t
M, the rotation speed n of motor
XCan control by controller, so the distance that piston is moved to the left: L=V/S
qJust can accurately control.
Beneficial effect
The present invention relates to a kind of oil cylinder control gear and method for using thereof, simple in structure, adopt the rotating speed control of controller to motor, so that the output quantity of controlled variable pump or metering pump, can accurately control the displacement of oil cylinder, simplified mechanical structure, reduce cost.
Description of drawings
Fig. 1 is a kind of schematic diagram of device of the present invention;
Fig. 2 is the another kind of schematic diagram of device of the present invention.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiments only to be used to the present invention is described and be not used in the restriction scope of the present invention.Should be understood that in addition those skilled in the art can do various changes or modification to the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Shown in Fig. 1-2, mode of execution of the present invention relates to a kind of oil cylinder control gear and method for using thereof, and device comprises oil cylinder, oil pump, motor 4 and controller 6; The centre of the cylinder body 11 of described oil cylinder is equipped with piston 12; Described piston 12 is divided into cylinder body 11 oil suction chamber 15 and goes out oil pocket 16, and the left side of described piston 12 is connected with left piston bar 14 between two parties, and the right side is connected with right piston rod 13 between two parties; Described oil suction chamber 15 is connected with control valve 2 through pipeline; Described control valve 2 links to each other with metering pump 3, and described metering pump 3 links to each other with fluid case 1 with motor 4 respectively, describedly goes out oil pocket 16 and directly is communicated with fluid case 1 through pipeline; One side of described motor 4 is connected and installed with rotating coder 5, and described motor 4 all links to each other with controller 6 with rotating coder 5.
Embodiment 1
If the rotating speed of controller 6 control motors 4 is constant n, the diameter B=300mm of the right hand piston bar 13 of oil cylinder, the diameter A=600mm of piston 12, the discharge capacity V of metering pump 3
0=16000mm
3/ r, if the control oil cylinder is toward moving left L=10mm, the number of turns that turns over of motor 4 is so: N=(A
2-B
2) π/4*L/V
0=(600
2-300
2) π/4*10/16000=132.5, motor 4 will turn over 132.5 circles in other words, and what controller 6 can be controlled motor 4 so is 2000r/min at constant rotational speed n, the displacement of oil cylinder has been controlled with regard to accomplishing through 3.98 seconds.
Embodiment 2
The diameter B=300mm of the right hand piston bar 13 of oil cylinder, the diameter A=600mm of piston 12, the discharge capacity V of metering pump 3
0=16000mm
3/ r just can make the accurate displacement of oil cylinder 12 realizations if control oil cylinder 12 toward moving left L=10mm, only needs the control motor to turn over certain number of turns, and motor 4 number of turns that need turn over is so: N=(A
2-B
2) π/4*L/V
0=(600
2-300
2) π/4*10/16000=132.5 circle, controller 6 control motors 4 rotations so, rotating coder 5 can be given controller 6 number of turns feedback information that motor 4 turns over simultaneously, accomplishes the control to the oil cylinder displacement when waiting number of turns that turns over to reach desirable value.
Claims (9)
1. oil cylinder control gear; Comprise oil cylinder, oil pump, motor (4) and controller (6); The centre of the cylinder body of described oil cylinder (11) is equipped with piston (12), and described piston (12) is divided into cylinder body (11) oil suction chamber (15) and goes out oil pocket (16), and the left side of described piston (12) is connected with left piston bar (14) between two parties; The right side is connected with right piston rod (13) between two parties; It is characterized in that described oil suction chamber (15) is connected with control valve (2) through pipeline, described control valve (2) links to each other with metering pump (3); Described metering pump (3) links to each other with fluid case (1) with motor (4) respectively; Describedly go out oil pocket (16) and be communicated with fluid case (1) through pipeline, a side of described motor (4) is connected and installed with rotating coder (5), and described motor (4) all links to each other with controller (6) with rotating coder (5).
2. a kind of oil cylinder control gear according to claim 1 is characterized in that: described metering pump (3) is replaceable to be variable displacement pump (7), and described variable displacement pump (7) links to each other with controller (6) with motor (4) respectively.
3. a method of using a kind of oil cylinder control gear as claimed in claim 1 comprises the following steps:
(a) rotation of controller (6) control motor (4), simultaneously, rotating coder (5) detects the actual speed of motor (4) or rotates the number of turns and feed back to controller (6);
(b) motor (4) drives metering pump (3) work, the fluid that metering pump (3) is discharged;
(c) fluid of metering pump (3) discharge gets into oil suction chamber (15) behind control valve (2), and fluid promotes piston (12) and is moved to the left.
4. a kind of method of using the oil cylinder control gear according to claim 3 is characterized in that: the work with motor (4) in the described step (a) is divided into M time period, T
MBe the working time of motor (4), then T
M=t
1+ t
2+ t
3+ ...+t
M, n
XBe t
XThe mean speed of time period inner motor (4), N
MBe accumulated time the one-tenth final required number of turns that turn over, the then N of motor (4) through the M section
M=n
1* t
1+ n
2* t
2+ n
3* t
3+ ...+n
M* t
M
5. a kind of method of using the oil cylinder control gear according to claim 3 is characterized in that: if controller (6) control motor (4) keeps certain rotation speed n, then N
M=n*T
M
6. a kind of method of using the oil cylinder control gear according to claim 3 is characterized in that: the fluid volume that metering pump (3) is discharged in the described step (b) is V, V=N
M* V
0, V wherein
0The fluid amount that turns around and discharged for metering pump (3).
7. a kind of method of using the oil cylinder control gear according to claim 3 is characterized in that: the sectional area of oil suction chamber (15) is S in the described step (c)
q=π * (A
2-B
2)/4, A is the diameter of section of right piston rod (13), B is the diameter of section of left piston bar (14), the distance that piston (12) is moved to the left: L=V/S
q=4N
M* V
0/ [π * (A
2-B
2)].
8. a kind of method of using the oil cylinder control gear according to claim 3 is characterized in that: the number of turns N that described controller (6) can turn over through the feedback control motor (4) of rotating coder (5)
M, the displacement distance L of piston (12) can be by formula L=V/S
q=4N
M* V
0/ [π * (A
2-B
2)] draw.
9. a kind of method of using the oil cylinder control gear according to claim 3 is characterized in that: described metering pump (3) can replace with variable displacement pump (7), the discharge capacity V of described controller (6) controllable variable pump (7)
X, V
XBe t
XThe turn around mean value of the amount of being discharged of time period internal variable pump (7), T
MBe cumulative time, T
MThe total displacement of the variable displacement pump (7) in the time is V, V=Δ V
1+ Δ V
2+ Δ V
3+ ...+Δ V
M=V
1* n
1* t
1+ V
2* n
2* t
2+ V
3* n
3* t
3+ ...+V
M* n
M* t
M, the rotation speed n of motor (4)
XCan control by controller (6), so the distance that piston (12) is moved to the left: L=V/S
qJust can accurately control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210308874.4A CN102797715B (en) | 2012-08-27 | 2012-08-27 | Oil cylinder control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210308874.4A CN102797715B (en) | 2012-08-27 | 2012-08-27 | Oil cylinder control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102797715A true CN102797715A (en) | 2012-11-28 |
| CN102797715B CN102797715B (en) | 2015-04-29 |
Family
ID=47196961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210308874.4A Expired - Fee Related CN102797715B (en) | 2012-08-27 | 2012-08-27 | Oil cylinder control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102797715B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112658805A (en) * | 2020-12-16 | 2021-04-16 | 东莞市埃弗米数控设备科技有限公司 | Flow pulse counter and application thereof |
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| US6126401A (en) * | 1998-08-12 | 2000-10-03 | Computer Graphics Systems Development Corporation | Hybrid electric/hydraulic drive system |
| CN101100105A (en) * | 2007-07-12 | 2008-01-09 | 昌盛达机械(浙江)有限公司 | Injection moulding machine servo energy-saving control system |
| CN101367262A (en) * | 2008-08-22 | 2009-02-18 | 昌盛达机械(浙江)有限公司 | Servo energy conservation power system of hollow molding machine |
| CN201288657Y (en) * | 2008-09-28 | 2009-08-12 | 海特克液压有限公司 | Electro-hydraulic integration dual chamber power variant control apparatus |
| CN101503998A (en) * | 2008-09-28 | 2009-08-12 | 海特克液压有限公司 | Electrohydraulic integrating dual-displacement variable power control system |
| CN201415463Y (en) * | 2009-05-21 | 2010-03-03 | 宁波弘讯科技有限公司 | Energy-saving high-precision gas-electric hybrid injection molding machine |
| JP2011020129A (en) * | 2009-07-14 | 2011-02-03 | Toyo Mach & Metal Co Ltd | Die casting machine |
| CN201816198U (en) * | 2010-06-29 | 2011-05-04 | 泰瑞机器制造(中国)有限公司 | Servo energy-saving device of injection molding machine |
| CN202088419U (en) * | 2011-04-20 | 2011-12-28 | 宁波高新区安立特电气科技有限公司 | Servo control system of injection molding machine |
| CN202867368U (en) * | 2012-08-27 | 2013-04-10 | 刘镇江 | Oil cylinder control device |
-
2012
- 2012-08-27 CN CN201210308874.4A patent/CN102797715B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6126401A (en) * | 1998-08-12 | 2000-10-03 | Computer Graphics Systems Development Corporation | Hybrid electric/hydraulic drive system |
| CN101100105A (en) * | 2007-07-12 | 2008-01-09 | 昌盛达机械(浙江)有限公司 | Injection moulding machine servo energy-saving control system |
| CN101367262A (en) * | 2008-08-22 | 2009-02-18 | 昌盛达机械(浙江)有限公司 | Servo energy conservation power system of hollow molding machine |
| CN201288657Y (en) * | 2008-09-28 | 2009-08-12 | 海特克液压有限公司 | Electro-hydraulic integration dual chamber power variant control apparatus |
| CN101503998A (en) * | 2008-09-28 | 2009-08-12 | 海特克液压有限公司 | Electrohydraulic integrating dual-displacement variable power control system |
| CN201415463Y (en) * | 2009-05-21 | 2010-03-03 | 宁波弘讯科技有限公司 | Energy-saving high-precision gas-electric hybrid injection molding machine |
| JP2011020129A (en) * | 2009-07-14 | 2011-02-03 | Toyo Mach & Metal Co Ltd | Die casting machine |
| CN201816198U (en) * | 2010-06-29 | 2011-05-04 | 泰瑞机器制造(中国)有限公司 | Servo energy-saving device of injection molding machine |
| CN202088419U (en) * | 2011-04-20 | 2011-12-28 | 宁波高新区安立特电气科技有限公司 | Servo control system of injection molding machine |
| CN202867368U (en) * | 2012-08-27 | 2013-04-10 | 刘镇江 | Oil cylinder control device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112658805A (en) * | 2020-12-16 | 2021-04-16 | 东莞市埃弗米数控设备科技有限公司 | Flow pulse counter and application thereof |
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| Publication number | Publication date |
|---|---|
| CN102797715B (en) | 2015-04-29 |
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Granted publication date: 20150429 Termination date: 20190827 |